OSEC

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Subject: Re: Propagating block cipher chaining modes
From: Paulo S. L. M. Barreto (paulo.barretoterra.com.br)
Date: Thu Sep 14 2000 - 16:46:26 CDT

On Thu, 14 Sep 2000, Alex Alten wrote:
> DES, as far as I last heard, has not been compromised below its
> designed strength (call it 56 bits -- whatever that really means. :-) )

Well, in a sense, it has. Linear cryptanalysis can break DES in 2^43 steps.

Cheers,

Paulo Barreto.